2 x DC/DC

9 x LDO

USB Transceiver

2 x Comparator

BB Processor

Power Domains

Memory

RF

Peripheral Devices

I/O

Interface of

Baseband

Processor

Connector

LP3919

Li-Ion Charger

AC Adapter

MPL

ADC

Control

LP3919

www.ti.com

SNVS493D – MAY 2007 – REVISED JUNE 2007

CDMA Power Management Unit

Check for Samples: LP3919

DESCRIPTION

The LP3919 is a complete Power Management Unit (PMU) designed for CDMA cellular phones. The LP3919

PMU contains a Li-Ion battery charger, low-noise low-dropout voltage regulators, buck regulators, a USB

Transceiver, comparators and a high-speed serial interface to program on/off conditions and output voltages of

individual regulators, and to read status information of the PMU.

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

System Diagram

PRODUCTION DATA information is current as of publication date.

Copyright © 2007, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.